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We analyze the anomalous magnetic moment of the muon (a_{\mu}) in supersymmetric scenarios. First we concentrate on scenarios with universal soft terms. We find that a moderate increase of a_{\mu} can be obtained by lowering the unification…

High Energy Physics - Phenomenology · Physics 2009-11-07 D. G. Cerdeno , E. Gabrielli , S. Khalil , C. Munoz , E. Torrente-Lujan

We investigate the collective magnetoplasmon excitations in a quantum dot containing finite number of electrons in the high magnetic field limit. We consider the electrons in the lowest Landau level and neglect mixing between the higher…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Subhasis Sinha

We explore the allowed ranges of cross sections for the elastic scattering of neutralinos \chi on nucleons in the constrained minimal supersymmetric extension of the Standard Model (CMSSM), in which scalar and gaugino masses are each…

High Energy Physics - Phenomenology · Physics 2016-09-06 John Ellis , Andrew Ferstl , Keith A. Olive

This search for Magnetic Monopoles (MMs) and High Electric Charge Objects (HECOs) with spins 0, 1/2 and 1, uses for the first time the full MoEDAL detector, exposed to 6.6 fb^-1 proton-proton collisions at 13 TeV. The results are…

High Energy Physics - Experiment · Physics 2025-02-24 MoEDAL Collaboration

We present the first study on the amplification of magnetic fields by the turbulent dynamo in the highly subsonic regime, with Mach numbers ranging from $10^{-3}$ to $0.4$. We find that for the lower Mach numbers the saturation efficiency…

High Energy Astrophysical Phenomena · Physics 2021-03-04 Radhika Achikanath Chirakkara , Christoph Federrath , Pranjal Trivedi , Robi Banerjee

We present a new constraint for the axion monopole-dipole coupling in the range of 1 micrometer to a few millimeters, previously unavailable for experimental study. The constraint was obtained using our recent results on the observation of…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Baessler , V. V. Nesvizhevsky , K. V. Protasov , A. Yu. Voronin

Strong accretion shocks are expected to illuminate the warm-hot inter-galactic medium encompassed by the filaments of the cosmic web, through synchrotron radio emission. Given their high sensitivity, low-frequency large radio facilities may…

Cosmology and Nongalactic Astrophysics · Physics 2021-08-18 Nicola Locatelli , Franco Vazza , Annalisa Bonafede , Serena Banfi , Gianni Bernardi , Claudio Gheller , Andrea Botteon , Timothy Shimwell

We investigate the potential of future neutrino experiments, DUNE and Hyper-Kamiokande, to probe magnetic monopoles via Callan-Rubakov (CR) processes. We consider both relativistic and non-relativistic monopoles and focus on two primary…

High Energy Physics - Phenomenology · Physics 2025-07-10 Pablo M. Candela , Valentin V. Khoze , Jessica Turner

In the grand tapestry of Physics, the magnetic monopole is a holy grail. Therefore, numerous efforts are underway in search of this hypothetical particle at CMS, ATLAS and MoEDAL experiments of LHC by employing different production…

High Energy Physics - Phenomenology · Physics 2024-04-18 Ijaz Ahmed , Sidra Swalheen , Mansoor Ur Rehman , Rimsha Tariq

Archival EAS-MSU data are searched for anomalous muonless events which may be caused by primary gamma rays with energies between 10^15 eV and 10^18 eV. We consider a refined sample of high-quality data and confirm the previously reported…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Yu. A. Fomin , N. N. Kalmykov , G. V. Kulikov , V. P. Sulakov , S. V. Troitsky

I use Unified Spinor Fields (USF), to discuss the creation of magnetic monopoles during preinflation, as excitations of the quantum vacuum coming from a condensate of massive charged vector bosons. For a primordial universe with total…

General Relativity and Quantum Cosmology · Physics 2020-08-04 Mauricio Bellini

If the discrepancy between the theoretical and newly measured values of the muon's anomalous magnetic moment is ascribed to muon substructure, there results an improved model--independent limit on its energy scale, 1.2 TeV < Lambda_mu < 3.2…

High Energy Physics - Phenomenology · Physics 2007-05-23 Kenneth Lane

Some modified theories of gravity are known to predict monopolar, in addition to the usual quadrupolar and beyond, gravitational radiation in the form of `breathing' modes. For the same reason that octupole and higher-multipole terms often…

High Energy Astrophysical Phenomena · Physics 2018-11-14 Arthur G Suvorov

A very sensitive search for cosmic-ray antihelium was performed using data obtained from three scientific flights of BESS magnetic rigidity spectrometer. We have not observed any antihelium; this places a model-independent upper limit (95 %…

Strong magnetic field of accreting neutron stars ($10^{14}$ G) is hard to probe by X-ray spectroscopy but can be indirectly inferred from spin-up/spin-down measurement in X-ray pulsars. The existing observations of slowly rotating X-ray…

High Energy Astrophysical Phenomena · Physics 2015-06-16 K. A. Postnov , N. I. Shakura , A. Yu. Kochetkova , L. Hjalmarsdotter

The amplitudes of the quadrupole and octopole measured from the Wilkinson Microwave Anisotropy Probe (WMAP) appear to be lower than expected according to the concordance Lambda CDM cosmology. However, the pseudo-Cl estimator used by the…

Astrophysics · Physics 2009-07-09 G. Efstathiou

We extend the Parker bound on the galactic flux $\cal F$ of magnetic monopoles. By requiring that a small initial seed field must survive the collapse of the protogalaxy, before any regenerative dynamo effects become significant, we develop…

Astrophysics · Physics 2009-10-31 M. J. Lewis , Katherine Freese , Gregory Tarle

The MEG collaboration searches for the mu to e gamma decay at the muon beam line PiE5 of the Paul Scherrer Institut in Switzerland. The world best upper limit has been set to be BR(mu to e gamma) < 5.7 10^-13 at 90% C.L. analyzing a data…

High Energy Physics - Experiment · Physics 2014-08-01 Gianluca Cavoto

The magnetic field strengths of most millisecond pulsars(MSP) are about $10^{8-9}$ Gauss. The accretion induced magnetic field evolution scenario here concludes that the field decay is invesely related to the accreted mass and the minimum…

Astrophysics · Physics 2007-05-23 Chengmin Zhang

We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1-10 GeV from the 10 X 10 degree region around the Galactic center. Our null results lead to upper limits to the line flux…

Astrophysics · Physics 2008-11-26 Anthony R. Pullen , Ranga-Ram Chary , Marc Kamionkowski
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